Cruise Report: 2023-07-24 : 07-26

Pot survey

Author

Mike O’Brien (UMCES)

General notes

Release cages were used at all sites in this survey.

Participants

  • Mike O’Brien (UMCES)
  • Evan Kostelecky (UMCES)
  • Capt. Brendan Harrington (F/V Integrity)
  • Ethan N (F/V Integrity mate)

Pot deployment cruise, 2023-07-25

Overall

  • 02:30 Meet at F/V Integrity, prepare for departure.
  • 02:49 Depart dock, transit to C2307-1 (control site).
  • 04:55 Arrive at C2307-1. BH begins rigging pots.
    • 05:26 Begin deploying pots.
    • 05:29 Finish deploying pots, transit to J11 (experimental turbine site).
  • 06:06 Arrive at J11.
    • 06:06 Begin deploying pots.
    • 06:09 Finish deploying pots, transit to N12 (experimental turbine site).
  • 06:34 Arrive at N12.
    • 6:34 Begin deploying pots.
    • 6:34 Finish deploying pots, transit to C2307-2 (control site).
  • 07:01 Arrive at C2307-2.
    • 07:01 Begin deploying pots.
    • 07:03 Finish deploying pots. Transit to K08 (experimental turbine site).
  • 08:02 Arrive at K08.
    • 08:02 Begin deploying pots; release cage BCB included.
    • 08:03 Finish deploying pots, transit to J07 (experimental turbine site).
  • 08:15 Arrive at J07.
    • 08:15 Begin deploying pots.
    • 08:17 Finish deploying pots. Return to West Ocean City, MD.
  • 10:36 Arrive in West Ocean City, MD.

Description

Survey deployment

Capt. Brendan Harrington and mates retrieved the pots from the Maryland Coastal Bays program and stacked the pots on the boat untied. Capt. Harrington used the period of transit between sites to tie the next string of pots on. Buoys were not removed from the release cage at site C2307-1. As a result, the rig was recovered using the redundant buoy system

Wind speed was negligible and sea state was predominantly long-period 3 ft rollers. Cloud cover was 10% of the sky. Surface temperature as reported by the satellite chart plotter was 77-78 F. Control sites ranged in depth from 92-136 ft, with turbine sites ranging from 93-116 ft.

Onset HOBO temperature loggers were attached to the ropeless cages and deployed at a control (C2307-2) and turbine (K08) site to log bottom temperature at 10 minute intervals during deployment.

Pot recovery cruise, 2023-07-26

Overall

  • 02:30 Meet at F/V Integrity, prepare for departure.
  • 02:40 Depart dock, transit to C2307-1.
  • 04:53 Arrive at C2307-1.
    • 04:53 Near block recovered.
    • 05:02 Release cage (far); pot recovery complete. Transit to J11.
  • 05:40 Arrive J11. Signal release cage.
    • 05:43 Release cage recovered.
    • 05:51 near block recovered; pot recovery complete. Transit to N12.
  • 06:23 Arrive N12. Begin pot recovery approach.
    • 06:25 Release cage buoys recovered.
    • 06:26 Release cage recovered.
    • 06:36 Near block recovered; pot recovery complete. Transit to C2307-2.
  • 07:16 Arrive C2307-2. Begin pot recovery approach.
    • 07:19 Release cage buoys recovered.
    • 07:21 Release cage recovered.
    • 07:27 Near block recovered; pot recovery complete. Transit to K08.
  • 08:20 Arrive K08. Begin pot recovery approach.
    • 08:38 Release cage recovered.
    • 08:45 Near block recovered; pot recovery complete. Transit to J07.
  • 09:04 Arrive J07. Begin pot recovery approach.
    • 09:05 Release cage buoys recovered.
    • 09:07 Release cage recovered.
    • 09:15 Near block recovered; pot recovery complete.
  • 09:15 End survey, return to West Ocean City, MD.
  • 11:30 Arrive in West Ocean City, MD.

Description

Wind speed was light, less than 5 kts from the west. Waves were choppier than the previous day but still calm at 1-2 ft. Sky was clear of clouds. Surface temperature as reported by the satellite chart plotter was 77-78 F.

HOBO temperature loggers were successfully recovered from the rigs at C2307-2 and K08.

Dominant species were black sea bass (34) and rock crab (23). 38 of the 89 recovered pots were empty.

There was a significant difference in black sea bass catch between near and far sections of the lines (Poisson GLM, \(p <\) 0.05), but no difference between turbine and control sites (Poisson GLM, \(p >\) 0.05).

Total length (mm) and weight (g) of all black sea bass were recorded. Total lengths of other fish species were also recorded. Black sea bass ranged in total length from 192 - 340 mm, with a mean of 238 mm (minimum legal size 320 mm). Weights ranged from 80 - 420 g, mean of 190 g.

Black sea bass were similar in length and weight in the far pots as compared to near and turbine sites as compared to control sites (ANOVA, all \(p >\) 0.05).

Catch and size data summaries are shown in the sample summary section below.

Station information

datetime cruise_id depth wind_speed wind_dir wave_height cloud_cover_10th ropeless_id surf_temp_f lon_start lat_start lon_end lat_end notes participants
deploy
C2307-1 2023-07-25 05:26:36 2307.0 92.3 0.0 NA 0-3 1.0 337.0 78 −74.77599 38.23210 −74.77507 38.23347 Bouys not removed from cage. DO NOT RELEASE. MOB, EK, BH, ENm
J11 2023-07-25 06:06:29 2307.0 93.3 0.0 NA 0-3 1.0 BCA 77 −74.72970 38.28592 −74.72829 38.28741 NA MOB, EK, BH, ENm
N12 2023-07-25 06:34:02 2307.0 116.0 0.0 NA 0-3 1.0 355.0 78 −74.66720 38.26879 −74.66513 38.26996 NA MOB, EK, BH, ENm
C2307-2 2023-07-25 07:01:16 2307.0 136.0 0.0 NA 0-3 1.0 335.0 78 −74.60858 38.24291 −74.60609 38.24342 NA MOB, EK, BH, ENm
K08 2023-07-25 08:02:12 2307.0 96.0 0.0 NA 0-3 1.0 BCB 77 −74.70516 38.33652 −74.70290 38.33798 NA MOB, EK, BH, ENm
J07 2023-07-25 08:15:43 2307.0 96.5 0.0 NA 0-3 1.0 3CD 77 −74.71906 38.35343 −74.71699 38.35501 NA MOB, EK, BH, ENm
recover
C2307-1 2023-07-26 04:53:33 2307.0 NA 1.0 W 44928.0 NA 337.0 77 −74.77457 38.23329 −74.77521 38.23146 Trawl recovered via float MOB, EK, BH, ENm
J11 2023-07-26 05:43:13 2307.0 NA NA NA 44928.0 1.0 BCA 77 −74.72969 38.28547 −74.72926 38.28679 NA MOB, EK, BH, ENm
N12 2023-07-26 06:23:40 2307.0 NA NA NA 44928.0 0.0 355.0 NA −74.66742 38.26844 −74.66676 38.26932 NA MOB, EK, BH, ENm
C2307-2 2023-07-26 07:16:35 2307.0 NA <5 W 44928.0 0.0 335.0 NA −74.60898 38.24259 −74.60794 38.24310 Issues communicating with release; needed to move closer to waypoint MOB, EK, BH, ENm
K08 2023-07-26 08:38:17 2307.0 NA <5 W 44928.0 0.0 BCB NA −74.70549 38.33626 −74.70433 38.33747 Issues communicating with release at 0.1nm; needed to move closer to waypoint (0.05nm). "Failed to recover" error. MOB, EK, BH, ENm
J07 2023-07-26 09:07:03 2307.0 NA NA NA 44928.0 0.0 3CD NA −74.71953 38.35327 −74.71861 38.35448 NA MOB, EK, BH, ENm

Bottom temperature

Cruise map

Sample summary

Catch

Black sea bass catch
N min average med max sd retained
June - 2022 - Control
far 18 0 1.0 1.0 2 0.77 33
near 10 0 1.4 1.0 5 1.81 25
June - 2022 - Project
far 6 0 0.3 0.0 2 0.58 42
near 5 0 0.4 0.0 2 0.65 42
July - 2022 - Control
far 18 0 1.2 0.0 6 1.93 17
near 11 0 0.9 1.0 3 1.08 13
July - 2022 - Project
far 13 0 0.5 0.0 3 0.70 24
near 4 0 0.2 0.0 1 0.43 15
August - 2022 - Control
far 112 0 3.3 1.0 21 5.24 20
near 71 0 3.0 1.0 18 5.03 16
August - 2022 - Project
far 36 0 0.5 0.0 5 0.96 24
near 35 0 0.7 0.0 8 1.53 21
April - 2023 - Control
far 14 0 0.8 0.0 4 1.26 8
near 3 0 0.2 0.0 3 0.87 3
April - 2023 - Project
far 29 0 0.7 0.0 5 1.23 18
near 29 0 1.2 0.0 7 2.15 13
May - 2023 - Control
far 12 0 0.7 0.0 3 0.91 10
near 15 0 1.2 1.0 3 0.87 10
May - 2023 - Project
far 79 0 2.2 2.0 7 1.82 20
near 40 0 1.7 2.0 4 1.24 20
June - 2023 - Control
far 101 0 2.7 1.0 14 3.78 33
near 42 0 1.8 0.0 12 3.30 25
June - 2023 - Project
far 226 0 3.0 1.0 21 4.13 42
near 184 0 3.8 1.0 18 4.66 42
July - 2023 - Control
far 26 0 1.4 1.0 7 1.92 17
near 18 0 1.5 0.5 7 2.20 13
July - 2023 - Project
far 17 0 0.5 0.0 6 1.17 24
near 35 0 1.4 0.0 24 4.77 15

July 2023 catch

The blank bars on the right show the count of pots with no catch.

Fish measurements

Total length (mm)

Weight (g)

Sex